CN217317850U - Hydraulic generator main shaft and rotor coupling pin bush dismounting device - Google Patents
Hydraulic generator main shaft and rotor coupling pin bush dismounting device Download PDFInfo
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- CN217317850U CN217317850U CN202221025934.7U CN202221025934U CN217317850U CN 217317850 U CN217317850 U CN 217317850U CN 202221025934 U CN202221025934 U CN 202221025934U CN 217317850 U CN217317850 U CN 217317850U
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- lifting screw
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a hydraulic generator main shaft and rotor shaft coupling pin bushing demolish device. Consists of a supporting mechanism and a lifting mechanism; the lifting mechanism is a hydraulic oil cylinder with an annular structure and comprises an annular hydraulic cylinder body and a piston cylinder, the annular hydraulic cylinder body comprises an annular hydraulic cavity, the piston cylinder can be arranged in the annular hydraulic cavity in a driving mode, and the bottom of the hydraulic cavity is provided with an oil inlet and outlet and is connected with a driving oil pump through a quick pipe joint; the supporting mechanism comprises a supporting ring and an end cover of a planar annular structure, the end cover is arranged on the top surface of the piston cylinder, and a plurality of sets of lifting screws for fixedly connecting with the coupling pin sleeve are symmetrically arranged on the end cover. The utility model adopts the hydraulic oil cylinder operation drive control, the lifting force meets the lifting requirement, the lifting force is uniform, stable and controllable, and the lifting height can be measured and controlled in real time; the pin bush lifting device can guarantee that the pin bush is vertically stressed in the lifting process, does not have horizontal component force, does not generate shearing force, is not easy to shear a lifting screw, and is safe, reliable and low in construction safety risk.
Description
Technical Field
The utility model relates to a power station unit equipment overhauls and equips the design field, especially a isolated plant is demolishd with rotor shaft coupling pin bushing to hydraulic generator main shaft.
Background
In order to further ensure the installation quality of a shaft system of the hydroelectric generating set, a part of main shafts of the power station generator and the rotor are connected by adopting coupling bolts and coupling pin sleeves, the torque is positioned and transmitted through the pin sleeves, and the pin sleeve holes are bored on site together after the relative positions of the rotor and the main shafts are determined by turning, so that the shaft quality is ensured. During the repair of the unit A, the rotor and the following components can be dismantled after the shaft coupling pin bush is dismantled, and the rotor and the following components are usually dismantled by adopting a self-made portal frame with an extending beam structure and a jack, and the method comprises the following steps: the lower parts of the portal frame supporting legs are provided with round holes matched with the sizes of the pin bush screw holes, the portal frame is fixed on the coupling pin bush through bolts, a jack is respectively erected at the position of an extending beam of the portal frame, two persons simultaneously operate the jacks to lift the portal frame, then the coupling pin bush is driven to lift until the positioning sections of the coupling pin bush are completely lifted out, and then the portal frame and the pin bush combination are lifted by utilizing a chain block, a steel wire rope and the like and are completely separated from the coupling bolt holes. However, in actual construction, the internal space of the rotor central body is narrow, and the position of a pin bush lifting screw hole cannot be uniformly considered during installation of the pin bush, so that subsequent overhaul and removal are facilitated, and a portal frame cannot be installed or a jack cannot be supported; in addition, the time period from the production of the unit to the overhaul of the unit is longer, lubricating grease coated on the surface of the pin bush is solidified, the pin bush is difficult to remove, even the fixing bolt of the portal frame and the pin bush is broken seriously, and the pin bush can only be removed in a violent mode.
Disclosure of Invention
For solving the problem among the above-mentioned prior art, the utility model provides a hydraulic generator main shaft demolishs device with rotor shaft coupling pin bushing.
The utility model discloses a following technical scheme realizes:
the utility model provides a device is demolishd with rotor shaft coupling pin bush which characterized in that: consists of a supporting mechanism and a lifting mechanism;
the lifting mechanism is a hydraulic oil cylinder with an annular structure and comprises an annular hydraulic cylinder body and a piston cylinder, an annular hydraulic cavity with an upper opening is arranged in the wall of the annular hydraulic cylinder body, the piston cylinder with the annular structure can be arranged in the annular hydraulic cavity in a driving way, and the bottom of the annular hydraulic cavity is provided with an oil inlet and an oil outlet of hydraulic driving oil and is connected with a driving oil pump through a quick pipe joint;
a support mechanism comprising: the upper end of the supporting ring supports and fixes the bottom of the annular hydraulic cylinder body; and the end cover is of a plane circular structure, is arranged on the top surface of the piston cylinder, and is symmetrically provided with a plurality of lifting screw rods which are fixedly connected with the coupling pin bush.
And the lifting screw is a full-thread screw, the size of the lifting screw is the same as that of a lifting screw hole of the coupling pin sleeve, a lower fixing nut used for fastening the back of the body is arranged at the bottom end of the lifting screw, a square head used for screwing is arranged at the top end of the lifting screw, and the lifting screw penetrates through the end cover and then is fixed on the end cover through an upper fixing nut.
And furthermore, two groups of lifting lugs for hoisting connection are symmetrically arranged around the center hole of the end cover plane circular ring. Four sets of lifting screw end cover plane rings are symmetrically arranged.
Support ring lower part is seted up door type hole along axis symmetry direction.
The inner diameter of the annular hydraulic cylinder body and the inner diameter of the support ring are both larger than the diameter of the coupling pin sleeve.
And the inner wall and the outer wall of the lower part of the piston cylinder are both provided with a sealing groove and embedded with an O-shaped sealing ring with an annular structure.
The utility model has the advantages that: the utility model discloses the power of device adopts hydraulic cylinder operation control, and the lifting force satisfies the promotion requirement, and the lifting force is even, stable and controllable, but promotes high real-time measurement control.
The utility model discloses the device can guarantee that the pin bush promotes the in-process and be perpendicular atress, does not have the horizontal direction component, does not produce the shearing force, and the difficult condition of taking place the hoisting screw and cutting off, safe and reliable, construction safety risk are low.
The utility model discloses the device promotes the structure for cylinder hydraulic control, installs in the cotter peripherad, promotes the impetus and arranges inside hoisting device, and the whole promotion process of cotter is accomplished inside it, and the support ring lower part sets up door type hole, ensures also can install at the cotter interval distance minimum, and does not receive the position influence of shaft coupling cotter lifting eye.
Drawings
Fig. 1 is a three-dimensional schematic view of the present invention;
fig. 2 is a cross-sectional three-dimensional schematic view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a schematic view of the state of the lifting pin bush of the present invention;
fig. 5 is the schematic view of the piston cylinder reset state of the hydraulic lifting device of the present invention.
In the figure: 1-lifting lugs; 2-lifting the screw rod; 3-upper fixing nut; 4-end cover; 5-a hydraulic oil cylinder; 51-a piston cylinder; 52-annular hydraulic cylinder; 53-annular hydraulic chamber; 54-O-ring seal; 55-oil inlet and outlet; 56-quick pipe joint, 57-support ring; 6-lower fixing nut; 7-a coupling pin sleeve; 8-a support block; 9-rotor hub, 10-coupling bolt.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the invention and is not intended to limit the invention in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
The utility model discloses a hydraulic generator main shaft and rotor coupling pin bush dismounting device, which comprises a supporting mechanism and a lifting mechanism;
the lifting mechanism is a hydraulic oil cylinder 5 with an annular structure and comprises an annular hydraulic cylinder body 52 and a piston cylinder 51, an annular hydraulic cavity 53 with an upper opening is arranged in the wall of the annular hydraulic cylinder body 52, the piston cylinder 51 with the annular structure can be arranged in the annular hydraulic cavity 53 in a driving way, and the bottom of the annular hydraulic cavity 53 is provided with an oil inlet and outlet port 55 for hydraulic driving oil and is connected with a driving oil pump through a quick pipe joint 56;
a support mechanism comprising: a support ring 57, the upper end of which supports the bottom of the fixed annular hydraulic cylinder 52; the end cover 4 is of a plane circular ring structure, the end cover 4 is arranged on the top surface of the piston cylinder 51, and a plurality of lifting screw rods 2 which are fixedly connected with the coupling pin sleeve 7 are symmetrically arranged on the plane circular ring of the end cover 4.
As shown, the annular cylinder body 52 of the hydraulic ram 5 is fixedly mounted on the support ring 57. The support ring 57 is hollow cylindrical, and the lower part of the cylinder is provided with gate-shaped holes along the axis symmetry direction. The annular hydraulic cylinder 52 is provided with an annular hydraulic chamber 53 in the annular wall, and the piston cylinder 51 is arranged in the annular hydraulic chamber 53 in a driving way.
The lifting screw rod 2 is a full-thread screw rod, the size of the lifting screw rod is consistent with that of a lifting screw hole of the coupling pin sleeve 7, the bottom end of the lifting screw rod is tightly backed by a lower fixing nut 6 after being connected with the lifting screw hole of the coupling pin sleeve 7, the top end of the lifting screw rod is provided with a square head, and the lifting screw rod is fixed on the end cover 4 through an upper fixing nut 3 after penetrating into the end cover.
The end cover 4 is a plane circular ring plate with a round hole in the center, is provided with 4 round holes consistent with the center of a lifting screw hole of the coupling pin sleeve 7, and can ensure that the lifting screw rod 2 can be smoothly penetrated.
The lifting lug 1 is welded and fixed on the end cover 4 and used for lifting the coupling pin bush 7;
the annular hydraulic cylinder body 52 is in a hollow cylinder shape with a cylindrical cavity inside, the lifting screw rod 2 is in threaded connection with the coupling pin sleeve 7 in the cylindrical cavity of the annular hydraulic cylinder body 52, and the top end of the lifting screw rod 2 is connected with the end cover 4 through the upper fixing nut 3; the bottom of the annular hydraulic cavity 53 is provided with an oil inlet and outlet 55, the outer side wall of the bottom of the annular hydraulic cylinder body 52 is provided with a quick pipe joint 56, and the quick pipe joint 56 is communicated with the oil inlet and outlet 55 and is connected with a driving oil pump through the position.
The piston cylinder 51 is hollow cylindrical, the end cap 4 is placed above the piston cylinder 51, and the end cap 4 is tightly pressed against the piston cylinder 51 by the lifting screw 2 and the upper fixing nut 3.
The support ring 57 of this example is set to a height of 200mm to 220mm, an inner diameter 15mm to 20mm larger than the outer diameter of the coupling pin bush 7, and the lower end is placed on the rotor hub 9.
The diameter of the cylindrical cavity of the annular hydraulic cylinder body 52 is 10-15 mm larger than the outer diameter of the coupling pin sleeve 7, and the height can meet the operation requirement of lifting 300mm at one time.
The inner wall and the outer wall of the piston cylinder 51 are provided with sealing grooves, and O-shaped sealing rings 54 are arranged in the sealing grooves; the internal and external seals strengthen the isolation of the hydraulic oil and improve the reliability and durability of the device.
The supporting block 8 is a hard insulating block, has the height of about 30 mm-50 mm, and consists of a plurality of groups for temporarily supporting the coupling pin bush 7.
The utility model discloses the device implementation as follows:
1) installing a lifting screw 2, installing the lifting screw 2 in a lifting screw hole of a coupling pin sleeve 7, fastening a square head at the top end of the lifting screw 2 by using a spanner, screwing the lifting screw 2, installing a lower fixing nut 6 and fastening;
2) the support ring 57 and the annular hydraulic cylinder 52 are sequentially sleeved from the top, the lifting screw 2 is arranged in a cylindrical cavity of the annular hydraulic cylinder 52, the support ring 57 is arranged on the rotor central body 9, and the support ring 57 corresponds to the minimum distance between two pin sleeves corresponding to the gate-shaped hole when being arranged.
3) And (4) installing an end cover 4, screwing the upper fixing nut 3 into the end cover along the thread section at the top end of the lifting screw rod 2 until the upper fixing nut 3 is attached to the top of the end cover 4, and screwing the upper fixing nut 3.
4) The quick pipe joint 56 is connected to a driving oil pump through a hydraulic oil pipe, and pressurizes the annular hydraulic cylinder 52 through the driving oil pump to drive the coupling pin sleeve 7 to lift;
5) when the coupling pin sleeve 7 is lifted to 50mm, two equal-height supporting blocks 8 are arranged below the coupling pin sleeve 7 from the positions of the door-shaped holes of the supporting rings 57, the oil pressure of the annular hydraulic cylinder body 52 is removed, and the piston cylinder 51 is restored to the original position by symmetrically and synchronously fastening a group of upper fixing nuts 3.
6) And (5) continuing lifting, and repeating the step 5) when the coupling pin bush 7 is lifted by 50mm each time until the coupling pin bush 7 is completely separated from the positioning section of the coupling bolt hole.
7) Whether the supporting block 8 is well padded or not is checked and confirmed, the oil pressure is removed after the supporting block is faultless, and the shaft coupling pin bush 7 is lifted out through the lifting lug by utilizing the chain block and the steel wire rope.
The device is dismantled and moved to the next coupling pin sleeve 7 until all the coupling pin sleeves 7 are pulled out.
Claims (7)
1. The utility model provides a device is demolishd with rotor shaft coupling pin bush which characterized in that: consists of a supporting mechanism and a lifting mechanism;
the lifting mechanism is a hydraulic oil cylinder with an annular structure and comprises an annular hydraulic cylinder body and a piston cylinder, an annular hydraulic cavity with an upper opening is arranged in the wall of the annular hydraulic cylinder body, the piston cylinder with the annular structure can be arranged in the annular hydraulic cavity in a driving way, and the bottom of the annular hydraulic cavity is provided with an oil inlet and an oil outlet of hydraulic driving oil and is connected with a driving oil pump through a quick pipe joint;
a support mechanism comprising: the upper end of the supporting ring supports and fixes the bottom of the annular hydraulic cylinder body; and the end cover is of a planar annular structure, is arranged on the top surface of the piston cylinder, and is symmetrically provided with a plurality of sets of lifting screw rods which are fixedly connected with the coupling pin sleeve.
2. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to claim 1, characterized in that: the lifting screw is a full-thread screw, the size of the lifting screw is the same as that of a lifting screw hole of the coupling pin sleeve, a lower fixing nut used for fastening the back of the body is arranged at the bottom end of the lifting screw, a square head used for screwing is arranged at the top end of the lifting screw, and the lifting screw penetrates through the end cover and then is fixed on the end cover through an upper fixing nut.
3. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to claim 2, characterized in that: and two groups of lifting lugs for hoisting connection are symmetrically arranged around the center hole of the end cover plane circular ring.
4. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to claim 3, characterized in that: four sets of lifting screw end cover plane circular rings are symmetrically arranged.
5. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to any one of claims 1 to 4, characterized in that: the lower part of the support ring is provided with door-shaped holes along the axis symmetry direction.
6. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to claim 5, characterized in that: the inner diameter of the annular hydraulic cylinder body and the inner diameter of the support ring are both larger than the diameter of the coupling pin sleeve.
7. The hydro-generator main shaft and rotor coupling pin bush dismounting device according to claim 5, characterized in that: and the inner wall and the outer wall of the lower part of the piston cylinder are both provided with a sealing groove and embedded with an O-shaped sealing ring with an annular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221025934.7U CN217317850U (en) | 2022-04-28 | 2022-04-28 | Hydraulic generator main shaft and rotor coupling pin bush dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221025934.7U CN217317850U (en) | 2022-04-28 | 2022-04-28 | Hydraulic generator main shaft and rotor coupling pin bush dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217317850U true CN217317850U (en) | 2022-08-30 |
Family
ID=82948360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221025934.7U Active CN217317850U (en) | 2022-04-28 | 2022-04-28 | Hydraulic generator main shaft and rotor coupling pin bush dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217317850U (en) |
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2022
- 2022-04-28 CN CN202221025934.7U patent/CN217317850U/en active Active
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